/**
 * @class NG.util
 * NG core utilities and functions.
 * @singleton
 */
if (typeof NG.util === "undefined") {
    NG.util = {};
}

/**
 * This function creates a new anchor element and uses location
 * properties (inherent) to get the desired URL data. Some String
 * operations are used (to normalize results across browsers).
 * 
 * @param {String} url
 * @return {Object} result
 * @member NG.util parseURL
 */
NG.util.parseURL = function (url) {
    var a =  document.createElement('a');
    a.id = "" + Math.random() + "";
    a.href = url;
    var result = {
        source: url,
        protocol: a.protocol.replace(':',''),
        host: a.hostname,
        port: a.port,
        query: a.search,
        params: (function(){
            var ret = {},
                seg = a.search.replace(/^\?/,'').split('&'),
                len = seg.length, i = 0, s;
            for (;i<len;i++) {
                if (!seg[i]) { continue; }
                s = seg[i].split('=');
                ret[s[0]] = s[1];
            }
            return ret;
        })(),
        file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],
        hash: a.hash.replace('#',''),
        path: a.pathname.replace(/^([^\/])/,'/$1'),
        relative: (a.href.match(/tp:\/\/[^\/]+(.+)/) || [,''])[1],
        segments: a.pathname.replace(/^\//,'').split('/'),
        getBaseUrl: function (){
        	return this.protocol + "://" + this.host + (this.port == 0 ? "" : ":" + this.port) + "/";
        }
    };
    return result;
};

/**
 * 
 * @param {Number} lon
 * @param {Number} lat
 */
NG.util.Point = function (lon, lat){
	this.lon = lon;
	this.lat = lat;
	toString = function (){
		return "(" + this.lon + ", " + this.lat + ")";
	};
};

/**
 * 
 * @param {Number} llLon
 * @param {Number} llLat
 * @param {Number} ulLon
 * @param {Number} ulLat
 */
NG.util.Rect = function (llLon, llLat, ulLon, ulLat){
	this.ll = new NG.util.Point(llLon, llLat);
	this.ul = new NG.util.Point(ulLon, ulLat);
	
	toString = function (){
		return "[" + this.ll.toString() + "," + this.ul.toString()  +"]";
	};
};

/**
 * Param <b>config</b> has fields:<br>
 * <li>String htmlContent. Default value is 'Bilgi gönderilmedi'
 * <li>Boolean addClose.
 * @param {Object} config
 * @return {Ext.Panel} panel
 */
NG.util.Overlay = function (config) {
	config = config || {};
	if (Ext.isEmpty(config.htmlContent))
		config.htmlContent = "Bilgi gönderilmedi";
	
	var overlay, dockedItems = [];
	if (config.addClose == true) {
		dockedItems =  [{
			dock : 'bottom',
			xtype: 'toolbar',
			ui   : 'light',
			items: [{
					iconCls: 'delete',
					iconMask: true,
					ui: 'plain',
					handler: function (){
						overlay.hide();
					}
				}
			]
		}];//!dockedItems		
	}

	overlay = new Ext.Panel(Ext.apply({
	    floating: true,
	    modal: true,
	    centered: false,
	    width: Ext.is.Phone ? 260 : 300,
	    height: Ext.is.Phone ? 220 : 300,
	    styleHtmlContent: true,
	    cls: 'htmlcontent',
	    //dockedItems: overlayTb,
	    scroll: 'vertical',
    	html: config.htmlContent,
    	dockedItems: dockedItems 
	}, config));

	return overlay;
};

/**
 * Base List class used in application.
 * 
 * @class NG.util.List
 * @extends {@link Ext.List}
 */
NG.util.List = Ext.extend(Ext.List, {
	
	/**
	 * Default value is  L_LOADING
	 * @type {String}
	 */
	loadingText: L_LOADING,
	
	/**
	 * Default value is  'Kayıt bulunamadı'
	 * @type {String}
	 */
	emptyText: MSG_NO_RECORD_FOUND,
	
	/**
	 * Clears all elements from list store.
	 */
	clear: function (){
		this.getStore().removeAll();
	},
	
	/**
	 * Deselects all selected items in the list.
	 * @function deselectAll 
	 */
	deselectAll: function (){
		for ( var i = 0; i < this.getStore().getCount(); i++) {
    		this.deselect(i, true ); 										
		}		
	}
	
});

/**
 * Tile, network info, category, fad, isvalid requests are cached in this singleton.
 * 
 * @return {Ext.util.HashMap}
 * @member NG.util Caches
 * @singleton
 */
NG.util.Caches = function () {
	this.tileCache = new Ext.util.HashMap();
	this.networkInfoCache = new Ext.util.HashMap();
	this.categoryCache = new Ext.util.HashMap();
	this.fadCache = new Ext.util.HashMap();
	this.isValidCache = new Ext.util.HashMap();
	this.caches = [];
	this.caches.push(this.tileCache);
	this.caches.push(this.networkInfoCache);
	this.caches.push(this.categoryCache);
	this.caches.push(this.fadCache);
	this.caches.push(this.isValidCache);
	this.tileCache.toString = function (){
		return "TILE-CACHE";
	};
	this.networkInfoCache.toString = function (){
		return "NETWORKINFO-CACHE";
	};
	this.categoryCache.toString = function (){
		return "CATEGORY-CACHE";
	};
	this.fadCache.toString = function (){
		return "FAD-CACHE";
	};	
	this.isValidCache.toString = function (){
		return "ISVALID-CACHE";
	};	
	
	var clearCallback = function (cache) {
		NGLogger.info(cache + " cleared.");
	};
	
	this.tileCache.on('clear', clearCallback);
	this.networkInfoCache.on('clear', clearCallback);
	this.categoryCache.on('clear', clearCallback);
	this.fadCache.on('clear', clearCallback);
	this.isValidCache.on('clear', clearCallback);
	
	this.clear = function (){
		for ( var i = 0; i < this.caches.length; i++) {
			this.caches[i].clear();
		}
	};
};

/**
 * @ignore
 */
var NGCache = new NG.util.Caches();
/**
 * @ignore
 */
var NGTileCache = NGCache.tileCache; 
/**
 * @ignore
 */
var NGNetworkInfoCache = NGCache.networkInfoCache;
/**
 * @ignore
 */
var NGCategoryCache = NGCache.categoryCache;
/**
 * @ignore
 */
var NGFADCache = NGCache.fadCache;
/**
 * @ignore
 */
var NGISVALIDCache = NGCache.isValidCache;
//!Caches

/**
 * Static Logger function consists of info method.<br>
 * Abbrevated as NGLogger.
 * @member NG.util Logger
 * @singleton
 */
NG.util.Logger = function () {
	this.info = function (str){
		console.log(str);
		var logArea = Ext.getCmp('netgis-log-area');
		if (logArea) {
			logArea.setValue((Ext.isEmpty(logArea.getValue()) ? "" : logArea.getValue()) + ("\n" + str));
		}		
	};
};

/**
 * @ignore
 */
var NGLogger = new NG.util.Logger();

/**
 * Javascript HashCode v1.0.0
 * This function returns a hash code (MD5) based on the argument object.
 * http://pmav.eu/stuff/javascript-hash-code
 *
 * Example:
 *  var s = "my String";
 *  alert(NG.util.HashCode.value(s));
 *
 * pmav, 2010
 * 
 * @member NG.util HashCode
 * @return {Object}
 */
NG.util.HashCode = function() {

    var serialize = function(object) {
        // Private
        var type, serializedCode = "";

        type = typeof object;

        if (type === 'object') {
            var element;

            for (element in object) {
                serializedCode += "[" + type + ":" + element + serialize(object[element]) + "]";
            }

        } else if (type === 'function') {
            serializedCode += "[" + type + ":" + object.toString() + "]";
        } else {
            serializedCode += "[" + type + ":" + object+"]";
        }

        return serializedCode.replace(/\s/g, "");
    };

    // Public, API
    return {
        value : function(object) {
            return NG.util.MD5(serialize(object));
        }
    };
}();

/**
 * MD5 (Message-Digest Algorithm)
 * http://www.webtoolkit.info/
 * 
 * @param {String} string
 * @member NG.util MD5
 * @return {String}
 */
NG.util.MD5 = function (string) {
 
	function RotateLeft(lValue, iShiftBits) {
		return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
	}
 
	function AddUnsigned(lX,lY) {
		var lX4,lY4,lX8,lY8,lResult;
		lX8 = (lX & 0x80000000);
		lY8 = (lY & 0x80000000);
		lX4 = (lX & 0x40000000);
		lY4 = (lY & 0x40000000);
		lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
		if (lX4 & lY4) {
			return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
		}
		if (lX4 | lY4) {
			if (lResult & 0x40000000) {
				return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
			} else {
				return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
			}
		} else {
			return (lResult ^ lX8 ^ lY8);
		}
 	}
 
 	function F(x,y,z) { return (x & y) | ((~x) & z); }
 	function G(x,y,z) { return (x & z) | (y & (~z)); }
 	function H(x,y,z) { return (x ^ y ^ z); }
	function I(x,y,z) { return (y ^ (x | (~z))); }
 
	function FF(a,b,c,d,x,s,ac) {
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	};
 
	function GG(a,b,c,d,x,s,ac) {
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	};
 
	function HH(a,b,c,d,x,s,ac) {
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	};
 
	function II(a,b,c,d,x,s,ac) {
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	};
 
	function ConvertToWordArray(string) {
		var lWordCount;
		var lMessageLength = string.length;
		var lNumberOfWords_temp1=lMessageLength + 8;
		var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
		var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
		var lWordArray=Array(lNumberOfWords-1);
		var lBytePosition = 0;
		var lByteCount = 0;
		while ( lByteCount < lMessageLength ) {
			lWordCount = (lByteCount-(lByteCount % 4))/4;
			lBytePosition = (lByteCount % 4)*8;
			lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
			lByteCount++;
		}
		lWordCount = (lByteCount-(lByteCount % 4))/4;
		lBytePosition = (lByteCount % 4)*8;
		lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
		lWordArray[lNumberOfWords-2] = lMessageLength<<3;
		lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
		return lWordArray;
	};
 
	function WordToHex(lValue) {
		var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
		for (lCount = 0;lCount<=3;lCount++) {
			lByte = (lValue>>>(lCount*8)) & 255;
			WordToHexValue_temp = "0" + lByte.toString(16);
			WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
		}
		return WordToHexValue;
	};
 
	function Utf8Encode(string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
 
		for (var n = 0; n < string.length; n++) {
 
			var c = string.charCodeAt(n);
 
			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
 
		}
 
		return utftext;
	};
 
	var x=Array();
	var k,AA,BB,CC,DD,a,b,c,d;
	var S11=7, S12=12, S13=17, S14=22;
	var S21=5, S22=9 , S23=14, S24=20;
	var S31=4, S32=11, S33=16, S34=23;
	var S41=6, S42=10, S43=15, S44=21;
 
	string = Utf8Encode(string);
 
	x = ConvertToWordArray(string);
 
	a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;
 
	for (k=0;k<x.length;k+=16) {
		AA=a; BB=b; CC=c; DD=d;
		a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
		d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
		c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
		b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
		a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
		d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
		c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
		b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
		a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
		d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
		c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
		b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
		a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
		d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
		c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
		b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
		a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
		d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
		c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
		b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
		a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
		d=GG(d,a,b,c,x[k+10],S22,0x2441453);
		c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
		b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
		a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
		d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
		c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
		b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
		a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
		d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
		c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
		b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
		a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
		d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
		c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
		b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
		a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
		d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
		c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
		b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
		a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
		d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
		c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
		b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
		a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
		d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
		c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
		b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
		a=II(a,b,c,d,x[k+0], S41,0xF4292244);
		d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
		c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
		b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
		a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
		d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
		c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
		b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
		a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
		d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
		c=II(c,d,a,b,x[k+6], S43,0xA3014314);
		b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
		a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
		d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
		c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
		b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
		a=AddUnsigned(a,AA);
		b=AddUnsigned(b,BB);
		c=AddUnsigned(c,CC);
		d=AddUnsigned(d,DD);
	}
 
	var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
 
	return temp.toLowerCase();
};


/**
 * Convert polygon or point to comma separated string.
 * @param {Object} geom Can be OpenLayers.Geometry.Polygon or OpenLayers.Geometry.Point
 * @member NG.util OpenLayerGeometryToCoordinateString
 * @return {String}
 */
NG.util.OpenLayerGeometryToCoordinateString = function (geom) {
	var coordinateStr = '';
	
	if ( geom instanceof OpenLayers.Geometry.Polygon || geom instanceof OpenLayers.Geometry.LineString) {
		//getVertices returns only all points of the geometry
		var verticesList = geom.getVertices(); 
		
		for (var i=0; i<verticesList.length; ++i) {
			coordinateStr += verticesList[i].x + ',' + verticesList[i].y + ",0 ";
		}
		
		if (geom instanceof OpenLayers.Geometry.Polygon) {
			//But for polygon last point must exist as last point of the array
			coordinateStr += verticesList[0].x + ',' + verticesList[0].y + ",0 ";			
		}
	}
	else if ( geom instanceof OpenLayers.Geometry.Point ) {
		coordinateStr = geom.x + ',' + geom.y + ",0";
	}
	
	return coordinateStr.trim();
};

/**
 * <b>params</b> config consists of<br/>
 * <li>duration: Integer milisecond (default 5000 ms)
 * <li>message: String The message content which will be displayed
 * 
 * @param {Object} params
 */
NG.util.showHint = function (params){
	params = Ext.apply({
		duration: 5000,
		message: 'Message'
	},params);
	Ext.get("NG-hint-message").dom.innerHTML = params.message;
	Ext.Anim.run(Ext.get('NG-hint'), 'fade', {
        out: true,
        autoClear: true,
        duration: params.duration,
        before: function (){
        	Ext.get('NG-hint').dom.style.display = "block";
        },
        after: function (){
        	Ext.get('NG-hint').dom.style.display = "none";		            	
        }
    });		
};
